Journal
POLYMER CHEMISTRY
Volume 5, Issue 15, Pages 4526-4533Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3py01755a
Keywords
-
Categories
Funding
- National Natural Science Foundation of China [21134001, 20990232]
- National Basic Research Program of China (973 Program) [2011CB606004]
Ask authors/readers for more resources
We have synthesized a new mesogen-jacketed liquid crystalline polymer, poly(4'-(methoxy)-2-vinylbiphenyl-4-methyl ether) (PMVBP) containing a biphenyl core in the side-chain. PMVBP has a smaller monomer molecular weight (MW), a higher glass transition temperature and a lower threshold MW for liquid crystalline (LC) formation. PMVBP was obtained via a nitroxide-mediated living radical polymerization and characterized by gel permeation chromatography, differential scanning calorimetry, polarized light microscopy, and one- and two-dimensional wide-angle X-ray diffraction (WAXD) experiments. The number-average MW (M-n) of the polymers ranges from 0.41 x 10(4) to 1.64 x 10(4) g mol(-1). A relatively high glass transition temperature is observed, which increases from 173 to 208 degrees C with increasing MW. The LC phase developed at relatively high temperatures is strongly dependent on the Mn of the polymer. A hexagonal columnar (Phi(H)) LC phase is observed above 260 degrees C when the Mn is only above 0.53 x 10(4) g mol(-1), a low threshold MW for LC formation. All of the LC phases are retained during cooling.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available